Tire Kingdom | 4,882 followers on LinkedIn. Tire Kingdom is a subsidiary of TBC Retail Group that is headquartered in Juno Beach, Florida and operates more than 730 company-owned stores under the brands: Tire Kingdom, NTB - National Tire and Battery, and Merchant's Tire and Auto Centers. TBC employs nearly 350 associates at its Juno Beach headquarters and approximately 8,400 associates nationally. Additionally, the TBC Retail Group operates 491 franchised Big O Tires retailers.